Method of remodeling milk cans



Aug. 1,'1944.

J.' A. HOPWOOD METHOD 0F REMODELING MILK CANS Original Filed-July 15, 1940 INVENTOR.

NEY

.BY f M HT y f This; inve-nume` is a division ict application, Serial No. 345,634L1'iled` July 15, 1940,

' which matured-as PatentNo.-f2,292;836, patented 4Aug. 11, 1,942.A That patent describes and claims Vall the milk may be drained- Patente-d Aug. 1, 1944 y ENT OFFICE 'lMETHoDforruriuonntrua'MrnKfcANsf f fr; i John :AifflopwoodfGreat NecknNflLQaslsignor to my depending an zoutlet for milk deliveryA cans wherein 'milk is delivered throughone of the wallsof the can by -Wayl of -va milkV deliverytube -which operates through an outlet packing in the wall'o'fithe'can.

" Special cans may belbuilt toiv permit oftthed# livery of milk through one of the walls assta'ted jibut iasmuchas the conventional milkfdelivery canl is not so constructed'itifrequentlyvbecomes fexpedient tomodifyor remodel the same for this ytype of delivery. The present invention discloses a` method whereby such a Astandard'c'an may 'be' remodeledv for this purpose; in a simple, economical and thoroughly efficient Way.

The inventionv is particularly adapted for `em- "ployment in connection with the lremodeling of cans to permit of milk delivery through the sidef wall of 'the can." This type of 'del-ivery'irivolves numerous problems for in the conventional can the bottom wallof the canis generallyidishedso as to be considerablydeeper'inthe centerthan Yat its periphery,V where the delivery of- Ymilk is detired. The method of this'inventionprovides for the remodeling of the canin Asuche/manner that therefrom through the side wall of the can.'

Generally speaking, the invention makes thisv possible by forming Vin the side wall of the can an opening` at an elevation at least as low as the 'flowermost'point in the bottom Wall of the can,

then slitting a 'portion of the wall adjacent the opening in such manner thattlie portions of thebottorn wall of the can, adjacent the slit or-slits thus Iformed, may# be -depressed to .form a `drainage channel from Substantially the center of the bottom wall to the opening formed in the side wall, thereafter sealing the slits thus provided to produce liquid tight joints and nally securing in the opening in the side wall an appropriate mounting for a discharge outlet.

Features o-I the invention, other than those adveited to, will be apparent from the hereinafter detailed description and claim, when read in con- `iuncten with the accompanying drawing.

The accompanying drawing shows one practical embodiment of the invention, but the construction therein shown is to 4be understood as illustrative, only, and not as'dening the limits ofthe invention.

Figures 1 4. inclusive are fragmentary perspective sections showing the lower portion of the side wall of the can and a part of the bottom wall in Monitor Process lCorporation, Jersey City, N. J.,

'Qrreraiionf NevJerSr .l mi appt-[tation Ju1yff15, 194e, smal N- eiiand thisiapplicatiohMay i1," 41,310 Y iiciaiinl (el. 11,21'201 i section andfshowing consecutive steps in the vmethod of remodeling these parts to permitiof the installationoi a cup which will serve as :a mounting for a discharge tube.

Figure5- is -a horizontal fragmental section lookingdown on lthe Ibottom of the can, showing Vthe-'method:step next followingthat illustrated VinFigure 4. This section is --taken on the 'line 5-5ofFigure6. w f

ure k; -fFigurecTlvis uref5.'-

v Figure -is a -section of 'a mounting cup for the `discharge tube.r

- In `Figures 1-7, L2l# .shows `a portion of the side "wall of a conventional can, the can bottom ybeing j indicatedwat 25, and 26 designates the usual reinvforcing vring which :is commonly secured'about the inner periphery of the downwardly extending ,rperipheral ,iiange'25 of 'the bottom .25. The bot- :tom-"2.5 isefdished afterthe manner commento conventional cans. Figure `T1 shows in full'l-ines --the structure' fof thecanl before' the start of, th fr`emodeling operation'.

It is to -be understood, with respect to Figures 1-4 and 7 that the sections taken are in the z? medial plane yof 'the zones of operation andrthat -the :can i-parts at both sides of the sectinlare '30 symmetrical Kand a duplication `of what is shown "in these figures. f l' The firststep in the method consists in forming a .slit 2.7 `in the bottom of Vt'hefcan d'irectly adjacent the inner surface oftheV ring`26 and open- Vgfingup jthe inner margin of this slit as indicated tai; 2 8.: This can beaccomplished by forcing 'a ,Ish'a'rp .pointed` cutter'rthrough the bottom ofthe Y can to produce the results shown in dotted lines in Figure 1 and in full lines in Figure 2.

The next step in the method consists in boring a hole 3| through the side wall 24, of a diameter big enough to receive the maximum exterior diameter of the side wall 2 of the cup I shown in Figure 8. This cut can. be conveniently made with a hollow cylindrical sharp edged cutter and should pass through not only the wall 24, but also a section onfthe line 'l-Jl Figthe peripheral flange 25 of the bottom and alsothe reinforcing ring 26. In other words, this cut should extend through the side wall of the can to the slit 21, as indicated in dotted lines in Figure 2 and in full lines in Figure 3.

The next step in the operation consists in bending down the margins 28 shown in full lines in Figure 3, into the dotted line position of that gure. Immediately thereafter a slot 29 is formed vFigure 6 is a section onf the-'line 6%6 aofi Figy tno opening, 3|, so that the portion of the bottom directly adjacent the opening willysubstantiallyv conform thereto. This may be conveniently acV complished by means of an appropriate-diewhich A' will press down this portion" of the bottom as. shown in dotted lines in Figure 4 and form therein' a gutter 32, shown best in Figures 5 and 7; This operation should be so carried out that the gutter' formed will be shaped to accomodate the dispensing tube adapted to be associated with cup -I ,i

While those portions of the bottom directly ad` jacent theopening will be shaped, vas shown at 33, to substantially correspond vto the shaping of the opening and to the cup I to be received in said opening, v y

When the bottom is acted upon in this way, the slit 29 which was formed, opens somewhat as shown in Figures 5 and 6 and permits the forming of the bottom. in the desired shape without rupturing the metal thereof.

After the bottom has vbeen the next step consists in placing directly beneath the thus formedportion of thebottoma reinforcing plate 35 shaped to conform with and underlie that portion of the bottom whichv has been shaped as stated, and a further portionof the vbottom and ring 26 directly adjacent thereto, so that the plate ,underlies and reinforces that portion of the bottom adjacent the opening-3 l The plate 35 and the abutting portionof the bottom are thoroughly tinned or otherwise Vprepared for attachment to one another and Vthey are thereupon vsweated in place. The. attachment can be augmented by rivets 36 if desired or, alternatively, the plate 35 may be welded in place. .The finished construc-y tion appears as shown in .Figure '7,although the edges may be overlaid .with solder or otherwise, as may be desired.

From a comparison between Figures 1 and 7, it will be notedithat, through the operations'described, a conventional can may be readily re-v modeled to provide a side delivery opening through whichv milk may be deliveredv through an appropriatedischarge tube, such as described in my parent disclosure.

`It will of course be understood that any appropriate mounting may be provided for supporting the delivery tubelin the opening 3| thus provided,

formed as stated,

1` wall 24. The cup may be welded, soldered, riveted, or otherwise secured in place in the opening, as stated, to serve as a mounting. for the discharge tube. The vtube in practice is adapted to extend "lthroughjthe cupin which an appropriate gasket is adapted to be seated.

I vhave described the operations illustrated in Figures l-'7 in connection with the use of simple 'implements to carry out these steps so that they nel. g l

y maybe clearly understood. Special machinery and apparatus are, however, employed in commercially practising this method, so as to expedite the operations and' produce uniform results.

In the foregoing jdetailed description, I have set forth the invention in one of its preferred practical forms and one methodfor carrying out Vthe same, but the invention is to be understood as .fully commensurate with the appended claim.

Having thus fully described the invention, what I-.claim as new and desire to secure by Letters Patentis:

-; r The method of 'preparing a1 milk can, having a lsubstantially Acylindrical-side wall and a'dshed bottompositioned above vthe'lower edge of said side wall, for the delivery of milk through said side wall adjacent said bottom,v which comprises the following steps: slitting'the can bottom arcuately adjacent to and substantially parallel with the side wall, forming in the can bottom a radial lslit extending inwardly from a. point medially of livery opening through the side wall to the arcuate f slit inA the bottom with at least a portion of said openingbelow said arcuate slit, forcing those porrtions of the bottom marginally of the radial slit the lengthv of the arcuate slit, cutting a milk dedownwardly into substantially the shape of the lower portion of the contour of the delivery opening ofthe side wall toprovidea discharge channel, thereafter Ypermanently attaching to the can bottom a reinforcing plate which closes the arcuate slit and bridges the thus deformed radial slit and overlies and closely conforms to the margins A thereof to reinforce the same and preclude leakage through the aforesaid slits, and thereafter securing a Adischarge tube mounting in the delivery opening in register with the discharge chan- JOHN A. noPwooD. 

